Typewriting machine



4 Shets-Sheet l v June 9, 1925.

, J. WALDHEIM TYPEWMTING MACHINE Filed June 4, 1921 IL n Q June 9,19.25";

J. WALDHEIM 'TYPEWRITING MACHINE Filed June 4, 1921 4 Sheets-Sheet 2 *NImi!! NT! H June 9, 1925.

` J. WALDHEIM TYPEWRITING MACHINE f1 Sheetfs-Sheet Y /nvenfarz' l,4f/Whe] Filed June 4.11921 Patented June 9, 1925.

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UNITED STATES PATENT `ortie.

JOI-IN WALDI-IIM, OF ELIZABE'l-I,` NEW' JERSEY, ASSIGNOR TO UNDERWOGI)TYPE- WRITER COMPANY, OF NEW YRK, N. Y., A CORPORATION OF DELAWARE.

i TYPEWR-ITING- MACHINE.

Application filed June 4, 1921.

To all whom t may concert;

Be it known that I, JoHN VALDHEIM, a citizen of the United States,residing in Elizabeth, in the county of Union and State of NewJersey,\have invented certain new and useful Improvements in TypewritingMachines, ofwhich the following is a speciication.

This invention relates to sound-deadening casing or hoods fortypewriting machines, and is in the nature of improvements on suchcasings as shown in my copending application, No. 466,820, tiled May ll,1921, now (Patent l,5l9,645, dated Decemberll, 1924)', in which theline-space lever, the carriage-return handle and the carriage-releaselever project out of the hood through a slot and between slot-closingcushions disposed lengthwise of the slot, so that the platenv may beline-spaced and the carriage returned or released from the exterior ofthe casing.V

In casings of this kind, in order to have them as light andV as strongas possible, it

has been proposed to make them of thin sheet-metal re-enforced withskeleton framework.

An object of the present invention is to provide a casing which issimple in construction, so that it may be produced at a minimum cost,and which has a maximum strength with minimum weight. To this end, thecasing of the present invention is composed of thin sheet-metal, and isso designed as to eliminate the necessity of a re-enforcing framework.

A feature of the invention residesin so constructing the casing that thecover and body `part thereof may be readily disassembled or knockeddown, to be packed for convenience in shipping, so as to occupy asmaller space than when assembled or set up for use, means beingprovided for readily locating the parts relatively to each other inassembling, said locating means being independent of fastening meanswhich hold the various parts together.

Another feature of the invention resides in the method of fastening afront plate of '10 the casing, so that it may readily be released toenable the machine to be placed within the casing.

Another feature of the invention is the provision of improved means forlocating the machine within the casing and for holdw Serial No. 475,061.

ing the casing relatively to the machine while the releasable frontplate is being adjusted thereto.

A further feature of the invention relates to slot-sealing cushions orlips through which entendv the carriage-controlling handles. The lipsare soft rubber tubes which have the characteristic that they yieldlocally to the carriage handle, without leaving gaps adjacent thehandle. The tendency of therubber to make a drag on the carriage by itsfriction uponV the handles, however, is overcome by interposing `aslipjacket to Contact with the handles and avoid retarding of thecarriage.A

Still another feature 'of the invention relates to improved meanscomprising a spring to assist the upward movement of the cover', andmeans to adjust the tension of said spring.

Other features and advantages will hereinafter appear.

In the accompanying drawings-4 Figure l is a front elevation, partly insection, of the casing.

Figure 2 is a detail perspective view of a portion of the cas-ing andshows the slotclosing cushions thereon.

Figure 3 is a sectional side viewlof the casing, taken on the line 3--3ofFigure l. Figure d is a detail view, showing portions of theslot-closing cushions and one of the handles of the carriage extendingloetwcen them, the upper cushion being shown in section.

Figure 5 is atop plan view of the lower part of the casing, the coverbeing removed.

Figure 6 is a perspective View, showing the cover and body part of thecasing disassembled into their various parts.

Figure 7 is a fragmentary top sectional view, taken on the line 7-7 ofFigure l, and shows the method of fastening the front plate to thecasing. Y

Figure 8 is an enlarged detail view of the lower slot-closing cushion,and shows the method of Aassembling and securing the same, and also themethod of supporting the ends of the casing by means of the front plate.the section being taken on the line n8 8 of Figure l.

The casing comprises a base or body portion 9, to which is pivoted acover 10, which may be swung, by means of a finger-piece l1, about ahinge 19. A slot 13 is formed between the cover and the body portion atthe front of the easing, through which various handles, including theline-space handle 14, the carriage-return handle and thecarriage-release handle 16, may extend, so that the platen 17 of atypewriting machine 18 within the casing may be linespaced and acarriage 19 returned or released without lifting the cover of thecasing.

The body portion and cover are formed of detachable sheet-metal platessemi-permanently secured to each other so that they may be disassembledor knocked down for shipping, and assembled or set up for use.

The body portion 9 comprises four walls or plates, namely, two endplates 20, a front plate 21 and a back plate 22. rl`he back plate andthe end plates may be located, in assembling, by means of dowel-pins 23proj eeting inwardly from flanges 24 on said end plates 20, saiddowel-pins entering` holes or perforations 25 in the back plate 22(Figure 6). After the plates 2O and 22 have thus been located, they maybe semi-perinanently fastened or secured to each other by means offlat-head screws 2G passing' through holes 27 in the flanges 24 and theback plate 22, said screws being provided at their inner ends with nuts28 to prevent loosening thereof.

The end or side plates 20 and the back plate 22 are provided with baseflanges 30 and 31, respectively, which are bent up from said plates, andribs 32 pressed inwardly on said plates, said flanges and ribs servingto strengthen or re-enforce said platesr The end plates are providedwith horizontal extensions 33 to form with the cover 10 lateralextensions 34 (Figure 1) of the casing, which the carriage enters in itstravel. The end plates are also provided, their upper edges, withbent-off portions or ledges 35, which may be covered with felt strips 36secured thereto and upon which the cover 10 may rest. The front plate 21of the body portion 9 is detachably mounted on the casing in a mannerand for a purpose hereinafter described.

The cover 10 of said casing comprises four walls or plates, namely, twoend plates 40, a front plate 41 and a back plate 42, the end platesbeing provided with inwardly-arched flanges 43, said flanges havingdowel-pins 44 thereon to enter the holes 45 in the front plate 41 anddowel-pins 48 to enter the holes 47 in the back plate 42 to locate saidplates when assembling the cover. Flat-head screws 50, having nuts 51 attheir inner ends, are provided to semipermanently fasten the plates 40,41 and 42 together, the screws passing through holes 52 in the endplates and holes 53 in the front and back plates. The back plate of thecover is arched forwardly and downwardly at 54 (Figures 3 and 6), whilethe front plate is arched upwardly and rearwardly at 55, the end plates40 being shaped, by arching the flanges 43 at 5G and 57, to conform withthe arches 54 and 55 of the back plate and the front plate. It will beunderstood that, by so arching the front and back plates, and also theflanges on tl e end plates, considerable strength and rigidity is givento the cover. To further strengthen the cover, the back plate thereofmay be provided with a re-enforeing rib 5S pressed np therefrom.

To enable the typing to be viewed without lifting the cover, the latteris provided with a rectangular opening formed between the inner edges 61of the end plates, the rear edge G2 of the front plate, and the frontedge 63 of the back plate, all of the edges 61, G2 and 63 being bentinwardly (Figures 3 and 6) to form abutments for a transparent plate 64secured to said cover` to close the opening 60 against the emission ofsound from the casing, said transparentplate being held in position bysuitable clamps G5, of which there may be one at each corner.

The hinge 12 for the cover may be coniposed of projections or knucklesG6 and G7 bent up alternately from the back plates 22 and 42 to formperforations 68 through which the pin or bolt 69 of the hinge may beinserted. Vith the present construction the two back plates 22 and 42may first be assembled and then the end plates 2O and 40 may beconnected thereto. It should be understood, however, that, by locatingthe pin 69 slightly to the rear of the position it now occupies (Figure3), so that it clears the flanges 24 and 43 of the end plates, the pin69 may be inserted after the various parts of the base and the coverhave been assembled.

An opening 7 0 is formed in the body portion of the casing at lthe frontbetween front flanges 71 of the end plates, said opening enabling themachine to he placed within the casing, the cover 10 being also raisedat this time, the keyboard section 72 of the machine projecting throughsaid opening. After the machine is placed inside the casing, the frontplate 41 may be attached thereto to close all of the opening|` exceptthat occupied by the keyboard scction of the machine.

The front plate is herein shown as detachable from the hood, and may beprovided with dowel-pins 73 to enter perforations 74 to assist inlocatingor adjusting it on the casing. After locating the front plate,it may be fastened to the casing by rotatable finger-pieces 75 onstub-shafts 7G carried by said front plate, said stub-shafts havingsecured thereto at their inner ends fingers or arms 77 to engage behindthe front liltl flanges 71 of the end plates of the body1 portion. Toguide the lingers behind the flanges, the inner edges of the flanges maybe beveled, as indicated at 78, Figure 7. The rotative movement of thelinger-pieces T5 may be limited by stops and 81 (Figure 3). The frontplate is provided at each Vend with flanges bent rearwardly therefrom,said flanges extending from the bottom of the plate, vertically upwardat 82, then horizontally at- 83 and then again vertically at 84 toconform with the contour of the end plates 20 of the body portion andembrace said end plates. lith this construction the horizontal portions83 of said flanges serve to reenforcc or support the horizontalextensions 33 of the end plates 20, and the upper vertical portions 841of said flanges prevent spreading of the end plates at the front thereofwhich may be caused by the weight of the cover 10, which rests on theledges 35.

The machine is provided with feet or projections 90, upon which itstands, and may readily be located when being set into the casing byallowing the rear feet to enter holdsnor perforations 91 in locators orbrackets 92, detachably secured to the back plate 22 by screws 93passing through holes in ears Slet, bent off from reinforcing lips 95,the screws being threaded into the back plate After the machine has beenplaced within the casing, the front cover plate may be attached aspreviously described. In attaching thecover plate, there is a tendencyto push thecasing rearwardly, and, consequently, displace it relativelyto the machine. This is avoided with the locators shown herein, due tothe fact'that they surround the elements or feet of the machine, withwhich they engage. lt will be understood that, with this arrangement,the machine is set down into the casing from the top thereof. rlhemachine and the casing may rest upon a pad 96 of any suitablesound-deadening material, such as felt. The locators are provided withrests to engage the pad so as to prevent bending of said locators andalso relieve the back plate of any undue strain in case the feet of themachine are accidentally set on the locators while endeavoring to insertthem into the holes.

To' keep the slot 13 at the front of the casing closed, as the handles14, 15 and 16 travel back and forth with the carriage, there may beprovided two oppositely-disposed slet-closing cushions 100 and 101, eachciishion comprising a resilient element 102, which may be composed ofrubber tubing. Said element is covered with a felt strip 103 loopedaround it, the edges of the felt strip being clan'iged between two bars101 and 105 secured to each other by screws 106 and nuts 107, Figure 8.Each slot-closing cushion, after it is assembled with the bars 104i and105, may be fastened to the casing by screws 108, the upper cushionbeing secured to the front plate 41 of the cover, and the lower cushionbeing secured to the upper edge of the removable front plate 21 of thebody portion. By an inspection of Figure 8, it will be seen that theedge of the bar 101 is extended beyond a ledge 109 formed on the bar105, thus forming a gutter 110 in which the slot-closing cushion isheld. It will be understood that, with this form of slot-closingcushion, the resilient element 102 is distortible crosswise andalsolengthwise of itself by the linger-pieces or handles 1/1, 15 and 16 asthey move between the cushions 100 and 101, and that the distortionstake place in theV immediate vicinity of the finger-pieces. rlhe rubbertubing is very elastic so as to permit considerable distortion of thelower slot-closing cushion, and readily springs back when thecarriage-release handle 16 is operated, said handle being depressible.Said felt jacket 103 produces much less friction upon the handles thanwould the rubber, and since it prevents contact between the rubber andthe handles, it results that the speed of the carriage is not retardedby the handles. The soft rubber tubes give `the advantage of being veryeasy to press in and close quite tigatly around the handles, so that nogap is left between the tubes, while the slip-jacket avoids the troublethat would arise from rubbing action between the handles and the rubbertubes. The slip-jacket or sheathing is likewise locally yieldable, beingtoo weak to be self-supporting, or to recover itself, but being'redistended by the rubber tube after the passage of the handles.

To facilitate the swinging of the cover, there may be provided one ormore springs 111 to counterbalance the weight of the cover, two springsbeing shown herein, one at each side of the casing. Each counterbalancespring 111 normally tends to lift the cover, and is connected to aninwardly and downwardly projecting arm 112 secured to the end plate t()of the cover, the forward end of the spring being connected to a bracket113, secured to the end plate 20 of the body portion. The spring swingsto a neutral position when the cover is about half-way between normaland vertical positions, owing to the upward movement of 112 around thehinge 12. To facilitate an adjustment of the tension of the spring 111,it is connected to the bracket by means of an eye-bolt 114. threadedinto said bracket, .said eye-bolt being secured in its adjusted positionby a lock-nut 115. The iingerepiece 11 is secured to the left-hand endof the cover, and is provided with rounded corners, so as to lessen thetendency to obstruct things to the exterior of said casing'.

To limit the upward movement of the cover, there may be provided one ormore stops 11G which may be in the form of studs secured to ears 117 atthe rear ends of the brackets 113, said studs being engaged by the arms112 on the cover.

lt will thus be seen, since the brackets 113 extend from front to rearalong the end plates, that tiey serve to re-enforce said plates againstthe stresses produced by the springs. lt will also be understood that,by securing the arms 112 as shown, the stresses of the springs aredistributed over the end plates Ll0, or, in other words, in thedirection of greatest strength of said cover.

lt will be understood that both the cover and the body part of thecasing may be lined with felt or any other suitable sounddeadeningmaterial to assist in deadening the noise of the typewriting machine.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus described my invention, 'I claim:

1. ln a casing for a typewriting machine, the combination of a body partand a cover therefor, the body part comprising overhanging lateralextensions and a releasable front plate having` rearward projections toengage under the lateral extensions and assist in supporting the latter,the cover being supported on the ends of the lateral extensions andforming' therewith extensions of the casing to accommodate the travel ofthe carriage.

2. ln a casing for a typewriting machine, the combination of anopen-front body part having a central portion and overhanging lateralextensions, a cover supportable on the ends of the lateral extensions,and a releasable front plate for the body part having lateral extensionscorresponding to the lateral extensions of said body part of the casing,the lateral extensions of the front plate having flanges extendinghorizontally under` the lateral extensions of the body part of thecasing to support the lateral extensions of the casing and also having'flanges extending vertically at the outer edges of the plate to engagethe ends of the lateral extensions of the body part of the casing toprevent spreading thereof at the front of the casing.

3. A sound-deadening casing for a typewriting machine, comprising a bodypart and a cover therefor, said body part coniprising a back wall andside walls having overhanging lateral extensions to co-operate with thecover, a releasable cover-plate to co-operate with the machine inclosing the front of said casing, said side walls havinginwardly-extending flanges, projections on the cover-plate to enterpcrforations in said flanges to locate the cover-plate on the side wallsand to preventmovement Les/lmao of the forward ends of the side walls teand from each other, and means to secure said cover-plate to saidcasing, comprising lingers rotatably mounted on said coverplate at itsrear face to be turned to positions to engage the rear faces of saidflanges, the inner edges of .said flan being beveled. to assist indirecting the lingers to the rear of said flanges, displacement-of theside walls laterally by said lingers being prevented by the connectionsbetween said cover-plate and said flanges.

4t. In a casing for a typewriting machine, the combination of a bodypart, a cover therefor, the body part having overhanging lateralextensions, the cover being` supporte-'l on the ends of the lateralextensions, a releasable front plate for the body part, and flanges bentup from said front plate, said flanges extending vertically upward atthe outside of the lateral extensions and engaging the latter to preventthem from spreading at their forward ends.

5. ln a casing for a typewriting machine, the combination of a bodypart, a cover therefor, said body part having an opening at the front topermit placing the machine within the casing, locators to position themachine within said casing, and a cover plate detachably mounted at theopening and on said casing to co-operate with the front of the machinein closing said opening, said locators being effective to prevent thecasing from slipping rearwart ly relatively to the machine when saiddetachable plate is being assembled on said casing.

6. In a casing for a typewriting machine, the combination of a bodypart, a cover therefor, said body part having an opening` at the frontto facilitate placing the machine within the casing, and a detachablecover plate to co-operate with the front of the machine to close theopening, said body part having perforations to be entered by projectionson the typewriting machine to establish the relative position of themachine within the casing, and prevent relative displacement betweenthem when the detachable plate is being pressed against the front of themachine in attaching the plate to the machine..

7. ln a casing' for a typewriting` machine, the combination of a bodypart, a cover therefor, said body part having an opening at the front tofacilitate placing the machine within the casing, a releasable coverplate to co-operate with the front of the typewriting machine in closingthe opening, and means to positively connect the casing with the machineto provenL relative displacement between them when the releasable plateis being connected to said casing.

8. ln a casing for a typewriting machine, the combination of a bodypart, a cover llO Leanne 5 rearward movement of the machine relativelyto the casing when the cover member is pressed thereagainsl: preparatoryto fastening said cover member on the body part of the casing.

9. In a casing for a typewriting machine, the combination ofa body part,a cover therefor, said body part having an opening at the front tofacilitate placing the machine within the casing, a detachable coverplate for the opening, and brackets securery to the rear wall of saidcasing, said brackets being perforated to be entered by the rear feet ofthe machine to locate the machine within the casing.

l0. In a combined typewriting machine and sound-deadening casingenclosing` the same, said typewriting machine having' acarriage and acarriage-controlling handle thereon, and said casing having a slotthrough which said handle projects, a slotsealing means combining arubber tube forming a lip at said slot, said tube resilient andself-sustaining but locally yieldable and constantly pressed in bysaidhandle, and means preventing` the rubber from retarding the travel ofthe carriage by friction thereof upon said handle, said preventing meansbeing a jacket of material having substantially less friction than therubber, and said jacket being too weak to be selfsupporting butbeingheld in form `by said rubber tube to maintain the slot sealed.

11. In a casing for a typewriting machine, the combination of a bodypart, a coverl pivoted on the body part, and` means to urge the cover toopen position, comprising a substantially horizontal spring normallytending to lift the cover and attached at its forward end to the bodypart and at its rear end to a downward projection of the cover, andswinging to neutral position when the cover is about half-way betweennormal and vertical positions, and means to adjust the tension of saidspring.

12. In a casing for a typewriting machine, the combination of a bodypart, a cover pivoted at its rear end on the body part, a downwardprojection on the cover adjacent its pivot, a bracket on the body part,and a pull spring connected to the projection and said bracket andnormally tending to lift the cover.

13. In a@ casing for a typewriting machine, the Qcombination of a bodypart, a cover pivoted on the body part, a downward projection on thecover, a forwardly and rearwardly extending bracket on the body part tore-enforce the sai e, a counterbalance spring attached at its forwardend to the bracket and at its rearward end to said projection Vandnormally urging said cover upwardly, and means on said bracket to varythe tension of said spring.

14. In a casing for a typewriting inachine, the combination of a bodypart, a cover pivoted on the body part, a downward projection on thecover, a forwardly and rearwardly extending bracket on the body part, aspring connected at its rear end to the projection and at its forwardend to said bracket, and a stop on said bracket to be engaged by theprojection on said cover to limit the movement of said cover.

15. A locator to co-operate with a typewriter foot to position thetypewriter in a casing, said locator comprising a. flat portion havingan opening to receive said foot, vertical stiffening flanges extendingupwardly at each side of said flat portion, attaching` ears, turneddownwardly from the ends of the flanges farthest from the opening, forsecuring the locator to a wall of the casing, and a tubular support forthe end of the locator having the foot-receiving` opening.

16. A typewriter sound-confining casing having a body-portion and acover-portion, said casing having lateral extensions to form chambersfor the movement of the typewriter carriage, said cover comprising saidextensions andhinged in rear to the bodyiortion and swinging rearwardlyto a posi.- tion of substantial poise upon said hinge about midwaybetween normal and vertical. positions, and a .spring normally tendingto lift said cover from closed position, said spring connected to saidcover to be rendered sul'istantially ineffective by reason of themovement thereof to such poised position.

17. A typewriter sound-subduing casing having an upper portion extendedto form a chamber to accommodate the run of the typevriter carriage,said casing having a cover hinged in rear to a body-portion, said coverincluding the upper portion of said chamber, said cover having sides inthe form of shells. cach shell comprising a vertical plate and flanges,the cover also having a plate forniing a back wall and a top, and alsohaving a front plate, said back and front` plates interlocking withcertain of the flanges on said shells, means releasably securing saidflanges to said plates, and a transparent plate extending downwardly andforwardly from the top to the front plate and eX- tending the entirewidth of the cover and with its sides inserted beneath correspondingflange on said sides.

1S. A; typewriter sound-confining casing having a body-portion and aliftable cover,

l it) llS the upper portion of said casing, including` said cover, beingextended to 'form a chamber to accommodate the run ot the typewritercarriage, said body-portion having a back plate, the upper portion ofsaid plate being extended at the sides, said cover being hinged to theupper portion ot said extended back plate, said body-portion also havingoverhanging sides to conform to the shape ot' said back plate, each sidehaving an internal flange extending around its edges, means fasteningsaid sides by their rear flanges to said back plate, said body-portionalso having a Jiront plate cut away between its side edges to form anopening for the typewriter' keyboard, and means releasably locking saidfront plate to the front ends olf said sides.

19. A typewriter sound-conlining casing having a body-portion and aliftable cover, the upper portion of said casing, including said cover,being extended to torni a chainber to acconnncdate the run ot thetypewriter carriage, said body-portion having a. back plate, the upperportion of said plate being extended at the sides, said cover beinghinged to the upper portion of said extended back plate, saidbody-portion also having overhanging sides to contorni to the shape ofsaid back plate, each side having an internal liange extending aroundits edges, means fastening said sides by their rear anges to said backplate, said body-portion also having a front plate cut away between itsside edges to form an opening Jfor the typewriter keyboard, and meansreleasably locking said 'front plate to the front ends orp said sides,said back plate having projecting forwardly theretrom means to engagethe feet et the typewmiting machine to locate the saine accuratelywithin the casing.

Q0. A typewriter sound-confining casing having a body-portion and aliftable cover, the upper portion of said casing, including said cover,being extended to form a chamber to accommodate the run of thetypewriter carriage, said body-portion having a rear plate, side platesfastened thereto and a front plate fastened to the side plates, saidrear plate having mea-ns engaging the lect of the typewriting machineand locating the same within the casing and holding it against lateralmovement in any direction.

2l. A sound-deadening casing for a typewriting machine having a carriagewith various carriage-operating levers extending forwardly therefrom,said casing having a slot at the lront through which said levers ei;-tend, sound-deadening cushion devices for closing said slot, and barsclamping opposite sides of each of said cushion devices and tormingsealing devices which are mounted on opposite sides of said slot, thebars for each cushion device being set at an angle to each other orflaring outwardly to torni a groove receiving the cushion.

2Q. A sound-deadening casing 'for a typewriting machine comprising acarriage having various carriage-operating levers extendin forwardlytherefrom, said casing having a slot at the front through which saidlevers extend, sound-deadening cushions for closing said slot, each ofsaid cushions comprising a tubular portion, and bars clamping tabsprovided on either side oit' each cushion to forni a unit, the unitsbeing mounted on opposite sides of said slot7 said bars flaringoutwardly to form substantially V-shaped grooves in which said tubularportions lie.

JOHN VALDHEIM. Titnessesz EDITH B. LIBBEY, JENNIE P. THORNE.

